vestibule vs building

vestibule and building both are nouns.

Word	Noun	Adjective	Verb	Adverb
vestibule	Yes	No	No	No
building	Yes	No	No	No

vestibule (noun)	building (noun)
a large entrance or reception room or area	the act of constructing something
any of various bodily cavities leading to another cavity (as of the ear or vagina)	the commercial activity involved in repairing old structures or constructing new ones
	a structure that has a roof and walls and stands more or less permanently in one place
	the occupants of a building